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Finding the Fourth Proportional to 66,615.96, 91,927.28 and 36,402.34

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Solution

The fourth proportional to 66,615.96, 91,927.28 and 36,402.34 is: 50,233.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,615.96 : 91,927.28 = 36,402.34 : x
  2. Step 2: Convert to fraction form
    66,615.96/91,927.28 = 36,402.34/x
  3. Step 3: Cross multiply
    66,615.96x = 91,927.28 × 36,402.34
  4. Step 4: Simplify right side
    66,615.96x = 3,346,368,101.84
  5. Step 5: Solve for x
    x = 3,346,368,101.84/66,615.96
  6. Step 6: Final answer
    x = 50,233.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.